Errors while submitting data to the server using form - php

Question

I am trying to submit data through form and came across the below error:
Warning: mysql_num_rows() expects parameter 1 to be resource, boolean given ..
Please find the code I have tried.
//connection end to my data server.
if(isset($_POST["submit"])) {
$user_name = $_POST['name'];
$user_email = $_POST['email'];
$user_skype = $_POST['skype'];
if($user_name==""){
echo "<script>alert('please enter your user name!')</script>";
exit();
}
if($user_email==""){
echo "<script>alert('please enter your email!')</script>";
exit();
}
if($user_skype==""){
echo "<script>alert('please enter your skype id.')</script>";
exit();
}
$check_email = "select * from binary where user_email = '$user_email' ";
$run = mysql_query($check_email);
if(mysql_num_rows($run)>0){
echo "<script>alert('Your email $user_email address already exist. please try another.')</script>";
exit();
}
$query= "insert into binary (user_name, user_email, user_skype) values('$user_name','$user_email','$user_skype')";
if(mysql_query($query)){
echo "<script>window.open('success.html','_self')</script>";
}
}
?>

Answer 1

binary is sql reserrve word
use backticks around it
$check_email = "select * from `binary` where user_email = '$user_email' ";
check this link for sql reserve word. http://dev.mysql.com/doc/refman/5.5/en/reserved-words.html
and learn mysqli_ function or P.D.O as mysql is deprcitaeted

Answer 2

Please update your query:
It should be
$check_email = "select * from `binary` where user_email = '".$user_email."' ";

Answer 3

it seems select query returns boolean false because
$check_email = "select * from binary where user_email = '$user_email' "
where user_email = '$user_email' can not parse value of '$user_email' because variable inside single quat does not parsed with their value
use:- where user_email = ".$user_email;
and everything should work